Automatic car-ventilator



(No Model.)

W. G. CBEAMER.

AUTOMATIC CAR VENTILATOR.

Patented Mar. 5, 1889.

mw w UNITED STATES PATENT OFFICE.

lVILLlAill G. CREAMER, OF BROOKLYN, NEW' YORK.

AUTOMATIC CAR-VENTILATOR.

SPECIFICATION forning part of Letters Patent No. 398,882, dated. March 5, 1889.

Application filed March 26, 1887. Serial No. 232,(503. (No model.)

To (LZZ whom it may concern;

Be it known that I, WILLIAM G. CREAMER, w

a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York,haVe invented new and useful Inprovements inAutomatic CanVentilators, (for 'WhlCll patents were granted to me August 21,

1861, and February 20,1872,) of which the foli lowing is a speeification.

My invention relates, nainly, to improvenents to stop the noise caused by the quick Vibration of the automatic defiectors by the i rapid action of the wind when the car is sta- These Ventilators are mainly used j tionary. on railroad passenger-cars, and any noise is Very objectionable when the ear is at rest, es- 3 peeially on night-cars. The lllVClltlOll of 1879 (bushing the pivots with rubber) dininished the noise Very much, but failed to stop it entirely. At that time, also, I used an india rubber stop at the end of the deflector; but this did not etfect the purpose entirely. I now place the first steps close up to the pivot, and the shock of the strike is thereby much diminished. This in connection with the elastic-strip joint now stops the noise entirely; also, inprovements by which, when the car is at rest, the defiectors will stand out at right angles with the body of the car, in order that the counter-current of air may the more readily put the defiector in the oblique position required to exhaust the air from the inside of the car; also, that in a hard rain the water will not lead into the car at the inner end of the defiector between the end of it and the body of the Ventilator; also, the additional protection of a -hooded coyering to the clefiector which prevents cross-Winds froni entering the ear. I attain these objects bythe improyenents shown 'in the accompanying drawings, in. which- Figure 1 represents a section of one side of the hooded covering to prevent the entrance of rain in crosswinds and the body of the i Ventilator in the side of the clear-story of the car.

i Similar letters ref er to similar parts throughout the several views.

i In Fig. l the automatic defieetorAis shown 3 in its natural position when the car is at rest, i standing out at right angles froni the car. This position it takes because the top pivot, l G, is set out about three-quarters of an inch i outside the perpendicular line of the one at i the bottom H. The hooded covering F F F i is also shown, and is open at each end.

y Fig. shows the hood-covering F F in outline with the dotted lines behind, showing the Ventilator and defiector A in the position taken when the car is novng to the right.

Fig. 3 shows the detlector A in its position when the car is at rest, and as soon as it moves to the right the resistance of the air puts it in the position shown by the dotted lines C.

lVithout the arrangenent of the pivots G H the doflectors would be liable to stand iu the oblique position shown at B, and then the air would drive into the car until it had attained considerable speed. W hen the car moves to the left, the defiector A takes the position shown by the dotted lines B. Close to the pivot 011 each side I place small blocks of rubber, E E, which the defiector A st-rikes noiselessly as it takes each of its positions. At the same time the inner end ot' the defiector A at I presses up against a thin rubber strip, D D, forning a tight joint by the pressure of the air on the outer end of the defiector A, keeping it tight up against the elastic strips D D. The body of the Ventilator, the delector, and hood are made of tin.

A brief summaryof its action is as follows: lVhen the caris stationary, all the several deflectors, ol' which there are usually eight on i each side of the clear-story, stand out at rightangles, as shown in Fig. 1. \Vhen the train starts, the opposing air strkes squarely against the defiector, and it then moves backward and strikes the little rubber cushion E, and. as the speed and pressure increase the inner end of the defieetor presses up against the Vertical rubber spring D and forms a tight joint. The current of air contracted to a jet by the hood acts much like a jet of water in i a still pond, causing a strong suction of air fieotor, of elastic strips located on each side of the pivot, and as close as possible thereto, and elastie strips located as described, so as to form a tight joint With the inner edge of the defleotor in either position.

WM. G. CREAMER.

XVtnesses:

E. S. RUTLEDGE, F. M. STEVENS. 

